Interested parties may listen to the conference call by dialing (888) 606-5719 (confirmation number 6033306) or by visiting MPLX's website at http://www.mplx.com and clicking on the "2018 Second-Quarter Financial Results" link in the "News & Headlines" section. Financial information, including the earnings release and other investor-related material, also will be available online. Replays of the conference call will be available on the partnership's website through Thursday, Aug. 9.

About MPLX LP

MPLX is a diversified, growth-oriented master limited partnership formed in 2012 by Marathon Petroleum Corporation to own, operate, develop and acquire midstream energy infrastructure assets. MPLX is engaged in the gathering, processing and transportation of natural gas; the gathering, transportation, fractionation, storage and marketing of NGLs; the transportation, storage and distribution of crude oil and refined petroleum products; and the refining logistics and fuels distributions services through a marine fleet and approximately 10,000 miles of crude oil and light product pipelines. Headquartered in Findlay, Ohio, MPLX's assets consist of a network of crude oil and products pipelines and supporting assets, including storage facilities (tank farms) located in the Midwest and Gulf Coast regions of the United States; 62 light-product terminals with approximately 24 million barrels of storage capacity; an inland marine business; storage caverns with approximately 2.8 million barrels of storage capacity; a barge dock facility with approximately 78,000 barrels per day of crude oil and product throughput capacity; tanks with storage capacity of approximately 56 million barrels as well as refinery docks, loading racks and associated piping; and gathering and processing assets that include approximately 5.9 billion cubic feet per day of gathering capacity, 8.4 billion cubic feet per day of natural gas processing capacity and 610,000 barrels per day of fractionation capacity.

"Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: Statements in this press release regarding MPLX LP's business which are not historical facts are "forward-looking statements" that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "Risk Factors" in the Company's Annual Report or Form 10-K for the most recently ended fiscal year.